no, that is not what i said ... i'll quote verbatim:
again, i'm not going to sit here and argue with you, b/c you won't realize until you start doing it. power in tennis IS about using your body mass and the energy of the ball. YES, racket head speed contributes to power, BUT racket head speed is wasted energy if it is not coupled with proper positioning. it is much easier to generate power by getting your body in a solid position than swinging your arm really fast at the ball.
it seems everyone is saying "ball pop" is related to racket head speed. i disagree. i think ball pop is more related to hitting a clean quality ball than simply total racket head speed.
as for bunting, that is a little bit of an extreme way to describe what i'm talking about, but the concept is sound. if you are a player seeking more power, most will do very well to shorten their swings and work on their footwork and position RATHER than working of more racket head speed. consider pros returning serve: the bunt all the time. BUNTING is a good way to describe what they do. of course, pro serves are faster, but the principle still applies to groundies: short strokes, use the speed of the ball, and position your body solidly ... soooo ... yes, you should practice "bunting" for winners. agassi and safin do it (did it) all the time.